Our LEF17T series is meticulously crafted to provide a comprehensive noise suppression solution with unparalleled simplicity and performance.

• Two Chokes in One: Save Space and Simplify EMI Filtering
  Integrate common mode and differential mode noise suppression into a single, compact component. This dual-function choke eliminates conductive noise across a broad frequency range—reducing your PCB footprint, BOM count, and assembly time.
• Safety Built to Industrial Standards
  With reinforced isolation (withstand AC 1000V for 1 minute between windings) and insulation resistance ≥100 MΩ at DC 500V, the LEF17T ensures user safety and system reliability. It is an ideal complement to isolation Transformers in high-voltage or human-accessible applications.
• Low Leakage, High Efficiency
  The closed-loop core design contains magnetic flux, increasing efficiency and reducing interference with nearby circuits—especially beneficial in designs incorporating sensitive Sensors or communication modules.
• Runs Cool Under Pressure
  Designed to operate at temperatures up to 110°C, this choke maintains stable performance and longevity, even in confined spaces with limited airflow.
• Easy to Source, Faster to Produce
  The through-hole design ensures mechanical stability throughout wave soldering. By merging two components into one, you simplify logistics, cut inventory cost, and speed up production.

Target Applications: Where the LEF17T Excels

This versatile EMI Filter is the ideal solution for a wide array of electronic equipment requiring robust noise suppression:

• Switch-Mode Power Supplies (SMPS): Ideal for 20W to 90W power adapters, chargers.
• LED Lighting Drivers: Ensure stable, flicker-free operation and achieve EMC compliance for both indoor and outdoor LED lighting solutions.
• Electronic Ballasts: Provide reliable EMI filtering for lighting systems.
• Industrial Control Systems: Improve the anti-interference ability of the control board and power module.

Delving Deeper: Technical Specifications at a Glance

Our product families offer a wide range of options to suit your specific needs. Here is a snapshot of key parameters across some popular series:

(This table provides a quick comparison. Detailed specs for each part number are available on their respective product pages.)

Technical Information:

• Test Frequency: 10kHz, 50mV
• Operating Temperature: -50°C to +110°C
• Rated Current: The current when the temperature rise of the coil reaches a maximum of ΔT=40°C (Ta=25°C).

The Integrated Advantage: Simplifying Your Design Journey

Choosing an integrated choke isn't just about buying a component; it's about adopting a smarter design philosophy.

• BOM Consolidation: Reduce component count, which minimizes sourcing complexity and potential points of failure.
• Layout Efficiency: Free up valuable PCB real estate for other critical components or to make your product more compact.
• Predictable Performance: Because both filtering elements are co-engineered on a single core, you get predictable and balanced performance, simplifying the tuning process for EMC compliance.

Facing a specific noise suppression challenge? Our engineering expertise is at your disposal to help you select the optimal model for your application.

Conclusion and Call to Action

Selecting the optimal EMI Filter is a critical decision that impacts the compliance, reliability, and time-to-market of your electronic designs. With its integrated design, robust safety features, and application-focused performance, the LEF17T series is your ideal partner to navigate these choices.

Ready to suppress noise and streamline your power supply design?

• Browse our full range of EMI Filters to find the standard part that meets your needs.
• Download the detailed LEF17T datasheet for comprehensive technical information.
• Can't find the perfect match? Please contact our technical team for consultation. We specialize in providing customized solutions to meet specific needs.